EN ISO 10846-1:2008

Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Selection of appropriate International Standard
5 Theoretical background
  5.1 Dynamic transfer stiffness
  5.2 Dynamic stiffness matrix of resilient elements
  5.3 Number of relevant blocked transfer stiffnesses
  5.4 Flanking transmission
  5.5 Loss factor
6 Measurement principles
  6.1 Dynamic transfer stiffness
  6.2 Direct method
  6.3 Indirect method
  6.4 Driving point method
Annex A (informative) - Functions related to dynamic stiffness
Annex B (informative) - Effect of symmetry on the transfer
                        stiffness matrix
Annex C (informative) - Simplified transfer stiffness matrices
Annex D (informative) - Linearity of resilient elements
Bibliography

ISO 10846-1:2008 explains the principles underlying ISO 10846-2, ISO 10846-3, ISO 10846-4 and ISO 10846-5 for determining the transfer properties of resilient elements from laboratory measurements, and provides assistance in the selection of the appropriate part of this series. It is applicable to resilient elements that are used to reducethe transmission of audiofrequency vibrations (structure-borne sound, 20 Hz to 20 kHz) to a structure which may, for example, radiate fluid-borne sound (airborne, waterborne, or other), andthe transmission of low-frequency vibrations (typically 1 Hz to 80 Hz), which may, for example, act upon human subjects or cause damage to structures of any size when the vibration is too severe.